Create config file/folder if missing

[microbuilder]

On a new system, it looks like the config file isn't being created if it is missing?

When the config system starts up, we should do several things:

• [x] Check if the NFFS partition is formatted
• [x] Format the NFFS partition if not formatted
• [x] Check if the config folder and file exists
• [x] If it doesn't exist create the folder and config file(s)

Test results looking at nffs contents on a new system (running the 'bleuart' example):

517:      log        ls        rm     mkdir        mv       cat 
518:   config      echo         ?     tasks  mempools      date 
520:     stat bleuarttx bleuartrx 
ls
1580:      dir /lost+found
1580:1 files

[hathach]

Ah right. Forgot to mkdir when move the file to /cfg folder ~.~